(a)
$N_{NaOH} = 1 \times 1 = 1\ N$
$N_{H_{2}SO_{4}} = 2 \times 10 = 20\ N$
Millieq. of $NaOH = 1 \times 100 = 100$
Millieq. of $H_{2}SO_{4} = 20 \times 10 = 200$
Thus, Millieq. of acid are left and therefore $pH < 7$. So, the resulting mixture will be acidic